3D printing building material

Abstract

The invention discloses a 3D printing building material including, by weight, 110-120 parts of an aggregate, 45-65 parts of coal slag, 4-12 parts of pottery clay, 5-15 parts of asbestos, 5-15 parts ofdesulfurization gypsum, 1-6 parts of titanium diboride, 1-2 parts of copper sulfate, 2-6 parts of a binder, 1-2 parts of calcium nitrate, 1-2 parts of potassium carbonate, 1-2 parts of silver nitrateand 30-50 parts of water. A graphite powder composite is prepared through the steps of: 1) mixing disproportionated rosin, graphite powder, dibutyltin dilaurate and toluene diisocynate, heating and stirring the mixture under protection by nitrogen gas, adding epoxidized soybean oil, and uniformly mixing the components; 2) adding phthalic anhydride and N,N-dimethylbenzylamine, mixing the components, heating and stirring the mixture, filtering and washing the mixture, drying the mixture and crushing the mixture; 3) adding ammonia water and anhydrous ethanol, uniformly mixing the components andadding tetraethoxysilane with stirring; 4) dropwise adding the mixture to liquid paraffin under stirring status, and after the mixture is all added, continuously stirring the mixture, and cooling andseparating the mixture; 5) washing a solid product with petroleum ether and anhydrous ethanol to obtain the graphite powder composite.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a 3D printing building material. Background technique [0002] 3D printing is affecting people's production and life as a rapidly developing new manufacturing technology. Architectural 3D printing technology has outstanding features such as efficient modeling, economical and environmental protection, precise processing, personalized production, and no construction waste. It is believed to subvert the traditional architectural model and bring the construction industry into the digital age. [0003] At present, the materials used in 3D printing buildings are still immature. The printing materials meet the safety requirements of multi-storey or even small high-rise buildings in areas with an earthquake intensity of 7 degrees. The minimum compressive strength of 3D printing materials suitable for buildings must reach 20MPa. The safety requirements of super high-rise buildings in...

AI Technical Summary

Problems solved by technology

[0003] At present, the materials used in 3D printing buildings are still immature. The printing materials meet the safety requirements of multi-storey or even small high-rise buildings in areas with an earthquake intensity of 7 degrees. The minimum compressive strength of 3D printing materials suitable for buildings must reach 20MPa. For the safety requirements of super high-rise buildings in areas with the same seismic intensity, the compressive strength should reach more than 35MPa, but the compressive strength of the current 3D printing building materials cannot meet the demand